PRIORITIES FOR EVALUATION OF APPLE/MALUS GERMPLASM.

The Apple/Malus CGC has established the following priorities for germplasm evaluation for the current year.
Order does not imply relative priority.
Proposals falling outside these priorities will be favorably considered if sufficient justification is provided.

GERMPLASM EVALUATION PRIORITIES

Diseases
Highest Priority High Priority
Crown Rot Black Root Rot
Apple Scab Nectaria Canker
Fireblight Quince rust
Fly speck Hawthorne rust
Sooty Blotch Black rot and White Rot
Cedar Apple Rust Pythium
Glomerella (Bitter rot) Cotton Root Rot
Crown gall Slerotium rolfsii
Nematodes
TRSV
White Root Rot
Rosellinia root rot
Viruses

Insects
Wooly apple aphid Tarnished Plant Bug
Rosy apple aphid Redbanded leaf roller
Green apple aphid Tentiform leaf miner
Apple maggot Scale insects
Codling Moth
Oblique Banded leafroller
Plum Curculio

Environmental Problems
Budbreak timing
Flowering period/timing
Sensitivity to high temperature
Low temperature tolerance/resistance
Nutrient uptake, transport, utilization
pH response
Responses to mineral deficiencies
Reponses to drought and to waterlogging

Physiological and Biochemical
Water relations; uptake, utilization, efficiency
Photosynthetic efficiency
Brittleness; wood structure
Tree architecture
Canopy characteristics
Fruit drop/retention;' abscission/adherence
Burrknot development
Rootability; propagation, tissue culture
Foliage attributes
Graft compatibility

Fruit Attributes
Storage Life (including response to modified/controlled atmospheres)
Shelf life
Storage rot susceptibility
Eating quality
Fruit ripening attributes
Biochemical/Nutritional
Search for potential toxic components
Tanning and phenol levels
Vitamin C content
ORAC
Mineral content
Fiber content